[CentOS] Postfix and choice of RBL

Hi,

I'm managing several mail servers running CentOS 7, Postfix and Dovecot.
SpamAssassin is filtering mail nicely, but I'm considering using RBL
(blacklists) to take some load off the servers.

General question to those of you who use RBL. Which lists do you
recommend using?

Cheers,

Niki
-- 
Microlinux - Solutions informatiques durables
7, place de l'église - 30730 Montpezat
Site : https://www.microlinux.fr
Mail : info at microlinux.fr
Tél. : 04 66 63 10 32
Mob. : 06 51 80 12 12